Zac finally decides to tell his adoptive parents the truth about his merman nature and his biological family.
Rikki hints at a possible future reunion, mentioning she might bring her old friends (Emma, Cleo, and Bella) to Mako one day. Where to Watch Mako Mermaids - Season 4Eps16
The series finale of Mako Mermaids , titled (Season 4, Episode 16), brings the show to a powerful and emotional conclusion as the long-standing mystery of Nerissa is finally solved. The Final Battle: Dragon vs. Mermaids Zac finally decides to tell his adoptive parents